update version for glibc git

toolchain/glibc/Makefile.inc

@@ -3,8 +3,8 @@
 
 PKG_NAME:=		glibc
 ifeq ($(ADK_LIBC_VERSION),git)
-PKG_VERSION:=		2.19.90
-PKG_REPO:=		git://sourceware.org/git/glibc.git
+PKG_VERSION:=		2.21.90
+PKG_SITES:=		git://sourceware.org/git/glibc.git
 endif
 ifeq ($(ADK_TARGET_LIB_GLIBC_2_21),y)
 PKG_VERSION:=		2.21